Region
Pennsylvania
Chester County (Pa.)
48
Chester County
34
Chester Co
4
Delaware County (Pa.)
3
United States
3
Bucks County (Pa.)
2
Charlestown School District, Chester County, Pa
2
Charlestown Township
2
Delaware County
2
Montgomery County
2
Montgomery County (Pa.)
2
Pennsylvanie
2
Berks County (Pa.)
1
Brandywine Creek (Pa. and Del.)
1
Burlington (Pa.)
1
Chesapeake and Delaware Canal (Del. and Md.)
1
Chester (Comté)
1
Dauphin County
1
Dauphin County (Pa.)
1
Elkton
1
Elkton (Md.)
1
Frankford (Philadelphia, Pa.)
1
Gwynned (Pa.)
1
Lancaster County
1
Lancaster County (Pa.)
1
Maryland
1
North Coventry (Township)
1
Pennsbury (Pa. : Township)
1
Reading Furnace Farm (Pa.)
1
Rural schools
1
Upper Uwchlan (Pa. : Township)
1
Upper Uwchlan (Township)
1
Valley Forge (Pa.)
1
West Chester
1
West Chester (Pa.)
1
Westtown Township, Chester County, Pa
1
Westtown Twp.,
1
Wilmington (Pa.)
1